Patents by Inventor Jae C. An

Jae C. An has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of making a mask ROM with a groove
    Patent number: 5624862
    Abstract: The mask ROM of the present invention is manufactured in the following processes; forming a cell array in which all the cells will be driven as on-cells, forming a groove by etching some portions of the semiconductor substrate in the drain region of the specific on-cell among the on-cells on customer's request, and then practicing a source and drain ion implantation process.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: April 29, 1997
    Assignee: Hyundai Electronics Industries Co. Ltd.
    Inventor: Jae C. An
  • Method for manufacturing a flash EEPROM cell
    Patent number: 5614747
    Abstract: The present invention discloses a split gate type flash EEPROM cell and a method of manufacturing the same which can prevent over-erasure of the flash EEPROM cell and decrease the cell area by forming a floating gate in the form of a spacer on a side wall of a select gate and by forming a control gate to surround the select gate and the floating gate.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: March 25, 1997
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventors: Byung J. Ahn, Jae C. An, Hee Y. Lee
  • Method of manufacturing a virtual ground split gate nonvolatile memory device
    Patent number: 5536668
    Abstract: The present invention discloses a method of manufacturing a nonvolatile memory device. According to the present invention, in a nonvolatile memory device in which an equal voltage is applied to the control gates formed along both sides of the bit lines, the continuity of the control gates can be enhanced by interconnecting these control gates inside the cell arrays, resulting in a higher integration of the device and a reduction of the production of resistance therein, thereby improving the yield of the device.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: July 16, 1996
    Assignee: Hyundai Electronics Industries, Co., Ltd.
    Inventors: Jae C. An, Hee H. Chang